853507138931 has 48 divisors (see below), whose sum is σ = 904619089920. Its totient is φ = 804635959680.

The previous prime is 853507138919. The next prime is 853507138963. The reversal of 853507138931 is 139831705358.

It is not a de Polignac number, because 853507138931 - 2⁶ = 853507138867 is a prime.

It is a super-3 number, since 3×853507138931³ (a number of 37 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is not an unprimeable number, because it can be changed into a prime (853507638931) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 6140339060 + ... + 6140339198.

It is an arithmetic number, because the mean of its divisors is an integer number (18846231040).

Almost surely, 2^853507138931 is an apocalyptic number.

853507138931 is a deficient number, since it is larger than the sum of its proper divisors (51111950989).

853507138931 is a wasteful number, since it uses less digits than its factorization.

853507138931 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 624 (or 517 counting only the distinct ones).

The product of its (nonzero) digits is 2721600, while the sum is 53.

The spelling of 853507138931 in words is "eight hundred fifty-three billion, five hundred seven million, one hundred thirty-eight thousand, nine hundred thirty-one".